These are the standard choices for Mac users to handle 7z archives. 2. Common Uses for This File
Since .7z is not natively supported by all operating systems, you will need a third-party extractor: RMv3_5c.7z
The official and most recommended tool. You can download and install 7-Zip for free. Once installed, right-click the file and select 7-Zip > Extract Here or Extract to "RMv3_5c/" . These are the standard choices for Mac users